simple-option v1.0.2

simple-option

Installation

# Yarn
$ yarn add simple-option
# npm
$ npm install --save simple-option

Usage

// create
const valueOrNone = some(1);
const valueOrNone = none();

const valueOrNone = fromNullable(1); // some(1)
const valueOrNone = fromNullable(null); // none()
const valueOrNone = fromNullable(undefined); // none()

// pattern match
const greeting = match(
  some("Tom"),
  (name: string) => `Hello ${name}!`,
  () => "Hello User!"
);

// function
// map
map(n => n * 2)(some(1)); // some(2)
map(n => n * 2)(none()); // none()

// andThen
map(n => some(n * 2))(some(1)); // some(2)
map(n => some(n * 2))(none()); // none()